OpenBB/openbb_terminal/API_README.md

# OpenBB SDK

OpenBB SDK gives you direct and programmatic access to all capabilities from OpenBB Terminal.
You will have the necessary building blocks to create your own financial tools and applications,
whether that be a visualization dashboard or a custom report on Jupyter Notebook.

With OpenBB SDK, you can access to normalized financial data from dozens of data providers,
without having to develop your own integrations from scratch.
On top of financial data feeds, OpenBB SDK also provides you with a toolbox to perform financial analysis
on a variety of asset classes, including stocks, crypto, ETFs, funds; the economy as well as your portfolios.

OpenBB SDK is created and maintained by OpenBB team together with the contributions from hundreds of community members.
This gives us an unrivaled speed of development and the ability to maintain stable integrations with numerous third-party data providers.
Developing and maintaining an full-blown investment research infrastructure from the ground up takes a lot of time and effort.
However, it does not have to be. Take advantage of OpenBB SDK with its out-of-the-box data connectors and financial analysis toolkit.
So that you can focus on designing and building your financial reports and applications.

## Setup

### 1. Import OpenBB SDK

First off, import OpenBB SDK into your python script or Jupyter Notebook with:

```python
from openbb_terminal.api import openbb
```

This imports all Terminal commands at once. To see all the available commands, you can press `tab` in jupyter notebook.
Another approach is to check out [OpenBB SDK Documentation](https://openbb-finance.github.io/OpenBBTerminal/api/), where you can explore its capabilities

### 2. Customize chart style

With OpenBB SDK, you can customize your chart style. You can switch between `dark` and `light` easily using this block of code:

```python
from openbb_terminal.api import TerminalStyle
theme = TerminalStyle("light", "light", "light")
```

<img width="813" alt="Screenshot 2022-10-03 at 23 56 52" src="https://user-images.githubusercontent.com/40023817/193700307-cbb12edc-0a5d-4804-9f3c-a798efd9e69d.png">

OR

```python
from openbb_terminal.api import TerminalStyle
theme = TerminalStyle("dark", "dark", "dark")
```

<img width="791" alt="Screenshot 2022-10-03 at 23 46 33" src="https://user-images.githubusercontent.com/40023817/193699221-e154995b-653c-40fd-8fc6-a3f8d39638db.png">

### 3. Access Documentation

Each and every command of OpenBB SDK has detailed documentation about input parameters and returned outputs. You can access them in multiple ways:

**Approach 1: Press `shift + tab`**
This will work out of the box if you're using Jupyter Notebook. In case your IDE is VSCode, you will need to install the [Jupyter PowerToys
extension](https://marketplace.visualstudio.com/items?itemName=ms-toolsai.vscode-jupyter-powertoys).

<img width="788" alt="Screenshot 2022-10-03 at 23 31 55" src="https://user-images.githubusercontent.com/40023817/193697567-e7143252-c560-441e-84fd-cbe38aeaf0ea.png">

**Approach 2: Type `help(command)`**

You can also type `help(command)`, see example below, to see the command' docstring.

<img width="871" alt="Screenshot 2022-10-03 at 23 33 05" src="https://user-images.githubusercontent.com/40023817/193697676-39351008-386d-4c4c-89f2-3de7d8d4e89d.png">

**Approach 3: Use OpenBB SDK Documentation page**

Finally, if you prefer to check documentation on a web browser, [OpenBB SDK Documentation](https://openbb-finance.github.io/OpenBBTerminal/api/) will be your best friend. You can browse available commands and search for any specific one that you need.

<img width="1200" alt="Screenshot 2022-10-03 at 18 41 48" src="https://user-images.githubusercontent.com/40023817/193643316-c063df03-4172-487f-ba47-ee60f36a3fef.png">

### 4. Set API Keys

You can set your external API keys through OpenBB SDK.

* Single API setup

```python
openbb.keys.fmp(key="example")

openbb.keys.reddit(
    client_id="example",
    client_secret="example", 
    password="example", 
    username="example", 
    useragent="example")
```

![image](https://user-images.githubusercontent.com/79287829/194706829-dd720d06-9027-4da6-87f1-f39c7d2d725a.png)

* API key setup with persistence: `persist=True` means that your key will be saved and can be reused after, otherwise it will be lost when you restart the kernel.

```python
openbb.keys.fmp(key="example", persist=True)
```

![image](https://user-images.githubusercontent.com/79287829/194706848-80302ffa-6e75-4f7a-b8ce-788e083977d4.png)

* Set multiple keys from dictionary

```python
d = {
    "fed": {
        "key":"XXXXX"
        }, 
    "binance": {
        "key":"YYYYY", 
        "secret":"ZZZZZ"
    },
}

openbb.keys.set_keys(d)
```

![image](https://user-images.githubusercontent.com/79287829/194706945-f1e6937f-74e2-4702-9e5e-c463287d61bd.png)

* Get info about API setup arguments

```python
openbb.keys.get_keys_info()
```

![image](https://user-images.githubusercontent.com/79287829/194706740-54bcc166-460a-410d-b34d-23e8b6c7aaf2.png)

* Get your defined keys

```python
openbb.keys.mykeys()
openbb.keys.mykeys(show=True)
```

![image](https://user-images.githubusercontent.com/79287829/194706907-239fe861-31c3-47c0-9051-7717cd026b76.png)

## Usage

Now, let's explore what OpenBB SDK can do. At a high level, you can break down OpenBB SDK's functionalities into two main buckets: (1) Data layer and (2) Toolbox layer.

### 1. Data Layer

### **Getting financial data from multiple data sources using one single API**

OpenBB SDK provides you access to normalized financial data from dozens of data sources, without having to built your own integration or relying on multiple third-party packages. Let's explore how we can do that.

First, you will need to load in the desired ticker. If it's not on the top of your mind, make use of our search functionality.

```python
openbb.stocks.search("apple")
```

<img width="652" alt="Screenshot 2022-10-04 at 00 00 14" src="https://user-images.githubusercontent.com/40023817/193700663-b91d57a9-4581-4f7e-a6da-764c0c9de092.png">

We want to load `Apple Inc.` listed on US exchange, so our ticker should be `AAPL`. If you want to load `Apple Inc.` from Brazilian exchange, you should load in `AAPL34.SA`.

```python
df = openbb.stocks.load("AAPL")
```

What's extremely powerful about OpenBB SDK is that you can specify the data source. Depending on the asset class, we have a list of available data sources and it's only getting bigger with contributions from our open-source community.

```python
## From YahooFinance
df_yf = openbb.stocks.load("AAPL", source='YahooFinance')

## From AlphaVantage
df_av = openbb.stocks.load("AAPL", source='AlphaVantage')

## From IEXCloud
df_iex = openbb.stocks.load("AAPL", source='IEXCloud')

## From Polygon
df_pol = openbb.stocks.load("AAPL", source='Polygon')
```

### **Easy option to switch between obtaining underlying data and charts**

Depending on your needs, you can get the outputs in form of data (e.g. `pandas dataframe`) or charts. If the latter is what you want, simple add `chart=True` as the last parameter.

### 1. Getting underlying data

```python
openbb.economy.index(indices = ['sp500', 'nyse_ny', 'russell1000'], start_date = '2010-01-01')
```

<img width="575" alt="Screenshot 2022-10-04 at 00 02 23" src="https://user-images.githubusercontent.com/40023817/193700891-f4d93440-31e3-411e-9931-3a38782f68e3.png">

You might be wondering how to find all the available indices. This type of information should be available in the docstring. Let's give it a try.

<img width="906" alt="Screenshot 2022-10-04 at 13 20 58" src="https://user-images.githubusercontent.com/40023817/193817866-b05cacee-a11b-4c44-b8c3-efb51bb9c892.png">

As mentioned in the docstring, you can access it with the following helper function.

```python
openbb.economy.available_indices()
```

<img width="1078" alt="Screenshot 2022-10-04 at 00 16 36" src="https://user-images.githubusercontent.com/40023817/193702595-ecbfc84d-3ed1-4f89-9086-e975b01c4b12.png">

### 2. Getting charts

```python
openbb.economy.index(indices = ['sp500', 'nyse_ny', 'russell1000'], start_date = '2010-01-01', chart=True)
```

<img width="741" alt="Screenshot 2022-10-04 at 00 03 57" src="https://user-images.githubusercontent.com/40023817/193701075-796ffabe-3266-4d71-9a81-3042e8ca5fc8.png">

## 2. Toolbox Layer

In addition to financial data, you can also get access to a robust and powerful toolbox to perform analysis on different asset classes and on your portfolio.

Imagine that you would like to leverage existing financial calculations from OpenBB and apply them on your own data. This can be done easily - OpenBB SDK's commands usually accept a `dataframe` as an input. Here you can load it your data, either via a `csv`, `excel` file, or connecting directly with an `API` or a `database`. The possibilities are endless.

Let's go through an example to see how we can do it in a few simple steps. Here we shall see how to use `portfolio optimization` functionalities from OpenBB SDK.

### Step 1. Loading order book

Here we will use an example orderbook for illustration purposes. You can choose to upload your own orderbook instead.

```python
order_book_path = "portfolio/allocation/60_40_Portfolio.xlsx"
tickers, categories = openbb.portfolio.po.load(excel_file = order_book_path)
```

### Step 2. Optimizing portfolio

We provide multiple portfolio optimization techniques. You can utilize basic mean-variance techniques, such as optimizing for the maximum Sharpe ratio, or minimum variance, as well as advanced optimization techniques including Hierarchical Risk Parity and Nested Clustered Optimization.

```python
## Max Sharpe optimization
weights_max_sharpe, data_returns_max_sharpe = openbb.portfolio.po.maxsharpe(tickers)

print("Max Sharpe")
weights_max_sharpe
```

<img width="734" alt="Screenshot 2022-10-04 at 13 23 45" src="https://user-images.githubusercontent.com/40023817/193818381-e3e75455-ea91-4bdd-a903-0874ac8700dc.png">

```python
## Minimum risk optimization
weights_min_risk, data_returns_min_risk = openbb.portfolio.po.minrisk(tickers)

print("Min Risk")
weights_min_risk
```

<img width="742" alt="Screenshot 2022-10-04 at 13 24 45" src="https://user-images.githubusercontent.com/40023817/193818556-89380c7c-94c3-4e5c-8848-28058c9cf056.png">

```python
## Hierarchical Risk Parity optimization

weights_hrp, data_returns_hrp = openbb.portfolio.po.hrp(tickers)

print("Hierarchical Risk Parity")
weights_hrp
```

<img width="736" alt="Screenshot 2022-10-04 at 13 34 39" src="https://user-images.githubusercontent.com/40023817/193820500-1bcde650-f517-4aed-b989-b2bd92bebbb8.png">

After having obtained the asset allocation outcomes, you can plot a correlation heatmap across tickers, as well as their individual risk contributition.

```python
openbb.portfolio.po.plot(data=data_returns_hrp,weights=weights_hrp,heat=True)
```

<img width="734" alt="Screenshot 2022-10-04 at 13 35 14" src="https://user-images.githubusercontent.com/40023817/193820624-3e6da926-aea9-4963-bd54-fd1a6df0fda3.png">

```python
openbb.portfolio.po.plot(data=data_returns_hrp,weights=weights_hrp,rc_chart=True)
```

<img width="737" alt="Screenshot 2022-10-04 at 13 36 10" src="https://user-images.githubusercontent.com/40023817/193820817-82f8727f-0e12-4794-b128-d6ebe20b2c4f.png">

These techniques have an extensive list of parameters and thus the optimization outcome is highly dependent on the chosen parameters. For instance, you can refer to the documentation below.
<img width="747" alt="Screenshot 2022-10-04 at 00 35 00" src="https://user-images.githubusercontent.com/40023817/193704210-b75ddee3-1da3-432b-90f8-6966e85bb345.png">

This allows us to alter certain assumption which also modify the asset allocation.

```python
weights_hrp_2, data_returns_hrp_2 = openbb.portfolio.po.hrp(
    tickers,
    interval="5y",
    risk_measure="cVaR",
    risk_aversion=0.8
)

pd.DataFrame([weights_hrp, weights_hrp_2], index=["Basic", "Extended"]).T
```

<img width="401" alt="Screenshot 2022-10-04 at 00 37 18" src="https://user-images.githubusercontent.com/40023817/193704462-d006deee-f009-4330-9918-0e0d661636d8.png">

The basic method was optimized for *variance*. The extended method increases the period of historical data, optimizes for conditional Value at Risk and has a lower risk aversion.

```python
openbb.portfolio.po.plot(data=data_returns_hrp,weights=weights_hrp,pie=True)
```

<img width="735" alt="Screenshot 2022-10-04 at 13 38 12" src="https://user-images.githubusercontent.com/40023817/193821181-0cb8cc51-3532-4542-b098-b23222330142.png">

```python
openbb.portfolio.po.plot(data=data_returns_hrp_2,weights=weights_hrp_2,pie=True)
```

<img width="735" alt="Screenshot 2022-10-04 at 13 38 30" src="https://user-images.githubusercontent.com/40023817/193821231-e92839b5-47d1-4a1a-81c2-61244bb6d925.png">

## Useful tips

### 1. Display matplotlib charts in Jupyter Notebook

To display matplotlib charts inside the Jupyter notebook output cells, you can use the block of code below, and initialize it at the top of the Notebook.

```python
import matplotlib.pyplot as plt
import matplotlib_inline.backend_inline
from openbb_terminal.api import openbb
%matplotlib inline
matplotlib_inline.backend_inline.set_matplotlib_formats("svg")
```

### 2. Take advantage of `external_axes`

The code below utilizes the `external_axes` parameter to get two axis in one chart.

```python
import matplotlib.pyplot as plt
from openbb_terminal.api import openbb
fig, (ax1, ax2) = plt.subplots(nrows=2, ncols=1, figsize=(11, 5), dpi=150)
openbb.stocks.dps.dpotc(
    "aapl",
    external_axes=[ax1, ax2],
    chart=True,
)
fig.tight_layout()
```

You can also do this to save output charts in a variable for later uses.

### For more examples, we'd recommend checking out our [curated Jupyter Notebook reports](https://github.com/OpenBB-finance/OpenBBTerminal/tree/main/openbb_terminal/reports). They are excellent demonstration on how to use the SDK to its fullest extent